add github actions to build image

.github/workflows/ci.yml

@@ -11,20 +11,41 @@ jobs:
     - name: test-image
       run: bin/ci
 
-  push:
-    name: Push to production server
+  build:
+    name: Build image and push to Gihub Registry (production branch only)
     needs: test
     runs-on: ubuntu-latest
+
     steps:
-    -
-      name: checkout-repo
-      uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-    -
-      name: Push to dokku
-      uses: dokku/[email protected]
-      with:
-        git_remote_url: ${{ secrets.GIT_REMOTE_URL }}
-        ssh_private_key: ${{ secrets.DOKKU_SSH_KEY }}
-      if: github.ref == 'refs/heads/production'
+      # Step 1: Check out the repository
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Step 2: Set up Docker Buildx (for cross-platform builds, if needed)
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Step 3: Log in to GitHub Container Registry
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Step 4: Build the Docker image
+      - name: Build Docker image
+        run: |
+          docker build -t ghcr.io/${{ github.repository }}:${{ github.sha }} .
+
+      # Step 5: Push the Docker image to GitHub Container Registry
+      - name: Push Docker image to GitHub Container Registry
+        run: |
+          docker push ghcr.io/${{ github.repository }}:${{ github.sha }}
+
+      # Optional Step 6: Add latest tag and push it as well
+      - name: Tag image as latest and push
+        run: |
+          docker tag ghcr.io/${{ github.repository }}:${{ github.sha }} ghcr.io/${{ github.repository }}:latest
+          docker push ghcr.io/${{ github.repository }}:latest
+        if: github.ref == 'refs/heads/production'